I regularly use some type of flasher tail light. I previously used a Planet bike super flash turbo. Periodically I would have to put in new batteries. I figured it might be good to be a little more ecological and try a USB rechargeable light. I found one last year that was nice and compact, good design nice and bright. The problem is that it no longer holds a charge particularly well and actually has gone dead while I am on longer rides.
I am wondering what experiences and opinions others have about USB vs batteries.
I have been using a 60 lumen Serfas USB rechargeable for 4 years. The battery can last for many long rides, but I generally charge it every 1 or 2 moderate rides (30 mi minimum). Haven't had any issue with it holding charge. It is bright enough to see in the day for at least 1/4 mi.
I ride about 2500 mi / yr, but I reckon use the light less than 1/2 of that distance.
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